Results 241 to 250 of about 22,492,002 (302)

Specific Position of Halogen in Crystalline TADF Scintillators Enables Efficient Triplet Harvesting Through Vibrational Modulation of Spin–Orbit Coupling

Advanced Materials, EarlyView.
Specific ortho‐halogenation transforms crystalline TADF emitters into efficient organic scintillators. Fluorine reduces the effective singlet–triplet separation, while chlorine combines near‐degenerate excited states with vibrational modulation of spin–orbit coupling.
Illia E. Serdiuk, Michał Mońka, Artur Sikorski, Konrad J. Drozdowski, Mohanad S. Eid, Krzysztof Wisniewski, Damian Trzybiński, Marcin E. Witkowski, Winicjusz Drozdowski   +8 more
wiley   +1 more source

Sustainable and Multifunctional Natural Macromolecular Polymers for Aqueous Zn Metal Batteries

Advanced Materials, EarlyView.
We comprehensively review the structure‐function relationships and regulatory mechanism of natural macromolecular polymers in stabilizing zinc anodes at the microscopic and mesoscopic scales. The interactions among polymer structures, optimization strategies, and regulatory mechanisms are discussed systematically summarizing recent related research ...
Yunuo Shi, Bo Jiang, Jingcheng Zhang, Xiaodong Shao, Peixun Xiong, Lutong Shan, Shengyang Huang, Mengfang Liang, Mengyao Chang, Fangyan Liu, Wenwu Li, Baoyu Xia, Wei Ji, Ho Seok Park   +13 more
wiley   +1 more source

Adsorption‐Engineered Hydrocarbon Ionomers for Durable Proton‐Exchange Membrane Fuel Cells

Advanced Materials, EarlyView.
Hydrocarbon ionomers suffer from oxidation‐driven interfacial degradation in PEM fuel cell cathodes, leading to catalyst instability. Here, adsorption‐engineered poly(fluorene) ionomers decouple interfacial anchoring from oxidative degradation, enabling strong catalyst–ionomer interactions while resisting electrochemical oxidation.
Heemin Park, Kate Chen, Su Min Ahn, Hengquan Guo, Cy Fujimoto, Jong‐Ho Choi, Lynda Amichi, Danah Kim, Seung Geol Lee, Xiaojing Wang, Jacob S. Spendelow, Sun Young Kang, Panagiotis Bexis, Eun Joo S. Park, Yu Seung Kim   +14 more
wiley   +1 more source

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Conformational analysis of sialyloligosaccharides

Carbohydrate Research, 1991
The conformational properties of several sialyloligosaccharides present as terminal sequences in N- and O-linked carbohydrate groups of glycoproteins, have been analyzed based on the n.m.r. data of selected sialosides. The compounds examined include representatives of the alpha-D-NeuAc-(2----6)-beta-D-Gal-(1----4)-beta-D-GlcNAc, alpha-D-NeuAc-(2----3 ...
S, Sabesan, K, Bock, J C, Paulson
openaire   +2 more sources

Conformational analysis of xyloglucans

International Journal of Biological Macromolecules, 1990
Xyloglucan isolated from the elongating regions of pea stems was examined using X-ray diffraction and energy calculations. The X-ray fibre pattern suggested that the backbone (1----4)-beta-D-glucan takes an extended two-fold helix similar to common cellulose.
K, Ogawa, T, Hayashi, K, Okamura
openaire   +2 more sources

Conformational analysis—II

Tetrahedron, 1981
Abstract The solution conformation of bicyclo [3.1.0] hexan-3-one has been obtained by the use of the shifts induced in its 1H and 13C NMR by Yb(fod)3. Refinement of the angle of pucker, ∝, of the 5-membered ring indicates that the molecule adopts a flattened boat conformation with ∝ = 195°.
Raymond J. Abraham, Derek J. Chadwick, Fernando Sancassan   +2 more
openaire   +1 more source

Conformational analysis of cyproheptadine hydrochloride

Journal of Medicinal Chemistry, 1990
A nuclear magnetic resonance and theoretical study on the conformations and molecular flexibility of cyproheptadine hydrochloride (1) is reported. In the 1H NMR spectrum of 1 in CDCl3, two conformational forms are observed to occur in an approximate ratio of 1:4. In both forms, NOE and coupling constant measurements suggested that the terminal N-methyl
Sadek, M, Craik, DJ, Hall, JG, Andrews, PR   +3 more
openaire   +5 more sources

Image Analysis by Conformal Embedding

Journal of Mathematical Imaging and Vision, 2011
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Oliver Fleischmann, Lennart Wietzke, Gerald Sommer   +2 more
openaire   +3 more sources

Synthesis and Conformational Analysis of Efrapeptins

Chemistry – A European Journal, 2011
AbstractThe efrapeptin family of peptide antibiotics produced by the fungus Tolypocladium niveum, and the neo‐efrapeptins from the fungus Geotrichum candidumare inhibitors of F1‐ATPase with promising antitumor, antimalaria, and insecticidal activity. They are rich in Cα‐dialkyl amino acids (Aib, Iva, Acc) and contain one β‐alanine and several pipecolic
Weigelt, Sven, Huber, Thomas, Hofmann, Frank, Jost, Micha, Ritzefeld, Markus, Luy, Burkhard, Freudenberger, Christoph, Majer, Zsuzsanna, Vass, Elemér, Greie, Jörg-Christian, Panella, Lavinia, Kaptein, Bernard, Broxterman, Quirinus B, Kessler, Horst, Altendorf, Karlheinz, Hollósi, Miklós, Sewald, Norbert   +16 more
openaire   +4 more sources

Conformational Analysis

2012
This chapter examines conformational analysis. Even though no two molecules have exactly the same shape at any one time, they are still all the same chemical compound—they have all the same atoms attached in the same way. The different shapes of molecules of the same compound are called different conformations.
Jonathan Clayden, Nick Greeves, Stuart Warren   +2 more
openaire   +2 more sources